Umicore N.V., known as Union Minière before 2001,[5] is a Belgian multinational materials technology company headquartered in Brussels, Belgium.
It was formed in 1989 by the merger of four companies in the mining and smelting industries, including the Union Minière known before 1968 as Union Minière du Haut Katanga. It has since reshaped itself into a more technology-focused business encompassing such areas as the refining and recycling of precious metals and the manufacture of specialised products from precious metals, cobalt, germanium, zinc, and other metals. The company has been a component of Belgium's benchmark BEL20 stock market index since its 1991 inception.[6]